﻿using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using Velocity4Net.Ctx;
using System.IO;

namespace Velocity4Net.Runtime.Parse.AST
{

    /*
     * Licensed to the Apache Software Foundation (ASF) under one
     * or more contributor license agreements.  See the NOTICE file
     * distributed with this work for additional information
     * regarding copyright ownership.  The ASF licenses this file
     * to you under the Apache License, Version 2.0 (the
     * "License"); you may not use this file except in compliance
     * with the License.  You may obtain a copy of the License at
     *
     *   http://www.apache.org/licenses/LICENSE-2.0
     *
     * Unless required by applicable law or agreed to in writing,
     * software distributed under the License is distributed on an
     * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
     * KIND, either express or implied.  See the License for the
     * specific language governing permissions and limitations
     * under the License.    
     */

    /**
     * This node holds the "Textblock" data which should not be interpreted by Velocity.
     *
     * Textblocks are marked in Velocity with #[[content here]]# notation. Velocity
     * will output everything between the markers and does not attempt to parse it in any way.
     */
    public class ASTTextblock : SimpleNode
    {
        public const String START = "#[[";
        public const String END = "]]#";
        private char[] ctext;

        /**
         * @param id
         */
        public ASTTextblock(int id)
            : base(id)
        {
            ;
        }

        /**
         * @param p
         * @param id
         */
        public ASTTextblock(Parser p, int id)
            : base(p, id)
        {
            ;
        }

        /**
         * @see org.apache.velocity.runtime.parser.node.SimpleNode#jjtAccept(org.apache.velocity.runtime.parser.node.ParserVisitor, java.lang.Object)
         */
        public Object jjtAccept(ParserVisitor visitor, Object data)
        {
            return visitor.visit(this, data);
        }

        /**
         * @see org.apache.velocity.runtime.parser.node.SimpleNode#init(org.apache.velocity.context.InternalContextAdapter, java.lang.Object)
         */
        public Object init(InternalContextAdapter context, Object data)
        {
            Token t = FirstToken;

            String text = t.image;

            // t.image is in format: #% <string> %#
            // we must strip away the hash tags
            text = text.Substring(START.Length, text.Length - END.Length);

            ctext = text.ToCharArray();
            return data;
        }

        /**
         * @see org.apache.velocity.runtime.parser.node.SimpleNode#render(org.apache.velocity.context.InternalContextAdapter, java.io.Writer)
         */
        public bool render(InternalContextAdapter context, TextWriter writer)
        {
            writer.Write(ctext);
            return true;
        }
    }

}
